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ccd979bd MF |
1 | /* -*- mode: c; c-basic-offset: 8; -*- |
2 | * vim: noexpandtab sw=8 ts=8 sts=0: | |
3 | * | |
4 | * inode.c | |
5 | * | |
6 | * vfs' aops, fops, dops and iops | |
7 | * | |
8 | * Copyright (C) 2002, 2004 Oracle. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public | |
12 | * License as published by the Free Software Foundation; either | |
13 | * version 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public | |
21 | * License along with this program; if not, write to the | |
22 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | * Boston, MA 021110-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/fs.h> | |
27 | #include <linux/types.h> | |
ccd979bd MF |
28 | #include <linux/highmem.h> |
29 | #include <linux/pagemap.h> | |
a90714c1 | 30 | #include <linux/quotaops.h> |
ccd979bd MF |
31 | |
32 | #include <asm/byteorder.h> | |
33 | ||
34 | #define MLOG_MASK_PREFIX ML_INODE | |
35 | #include <cluster/masklog.h> | |
36 | ||
37 | #include "ocfs2.h" | |
38 | ||
39 | #include "alloc.h" | |
9b7895ef | 40 | #include "dir.h" |
d6b32bbb | 41 | #include "blockcheck.h" |
ccd979bd MF |
42 | #include "dlmglue.h" |
43 | #include "extent_map.h" | |
44 | #include "file.h" | |
b4df6ed8 | 45 | #include "heartbeat.h" |
ccd979bd MF |
46 | #include "inode.h" |
47 | #include "journal.h" | |
48 | #include "namei.h" | |
49 | #include "suballoc.h" | |
50 | #include "super.h" | |
51 | #include "symlink.h" | |
52 | #include "sysfile.h" | |
53 | #include "uptodate.h" | |
cf1d6c76 | 54 | #include "xattr.h" |
8b2c0dba | 55 | #include "refcounttree.h" |
ccd979bd MF |
56 | |
57 | #include "buffer_head_io.h" | |
58 | ||
ccd979bd MF |
59 | struct ocfs2_find_inode_args |
60 | { | |
61 | u64 fi_blkno; | |
62 | unsigned long fi_ino; | |
63 | unsigned int fi_flags; | |
5fa0613e | 64 | unsigned int fi_sysfile_type; |
ccd979bd MF |
65 | }; |
66 | ||
5fa0613e JK |
67 | static struct lock_class_key ocfs2_sysfile_lock_key[NUM_SYSTEM_INODES]; |
68 | ||
ccd979bd MF |
69 | static int ocfs2_read_locked_inode(struct inode *inode, |
70 | struct ocfs2_find_inode_args *args); | |
71 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque); | |
72 | static int ocfs2_find_actor(struct inode *inode, void *opaque); | |
73 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
74 | struct inode *inode, | |
75 | struct buffer_head *fe_bh); | |
76 | ||
ca4d147e HP |
77 | void ocfs2_set_inode_flags(struct inode *inode) |
78 | { | |
79 | unsigned int flags = OCFS2_I(inode)->ip_attr; | |
80 | ||
81 | inode->i_flags &= ~(S_IMMUTABLE | | |
82 | S_SYNC | S_APPEND | S_NOATIME | S_DIRSYNC); | |
83 | ||
84 | if (flags & OCFS2_IMMUTABLE_FL) | |
85 | inode->i_flags |= S_IMMUTABLE; | |
86 | ||
87 | if (flags & OCFS2_SYNC_FL) | |
88 | inode->i_flags |= S_SYNC; | |
89 | if (flags & OCFS2_APPEND_FL) | |
90 | inode->i_flags |= S_APPEND; | |
91 | if (flags & OCFS2_NOATIME_FL) | |
92 | inode->i_flags |= S_NOATIME; | |
93 | if (flags & OCFS2_DIRSYNC_FL) | |
94 | inode->i_flags |= S_DIRSYNC; | |
95 | } | |
96 | ||
6e4b0d56 JK |
97 | /* Propagate flags from i_flags to OCFS2_I(inode)->ip_attr */ |
98 | void ocfs2_get_inode_flags(struct ocfs2_inode_info *oi) | |
99 | { | |
100 | unsigned int flags = oi->vfs_inode.i_flags; | |
101 | ||
102 | oi->ip_attr &= ~(OCFS2_SYNC_FL|OCFS2_APPEND_FL| | |
103 | OCFS2_IMMUTABLE_FL|OCFS2_NOATIME_FL|OCFS2_DIRSYNC_FL); | |
104 | if (flags & S_SYNC) | |
105 | oi->ip_attr |= OCFS2_SYNC_FL; | |
106 | if (flags & S_APPEND) | |
107 | oi->ip_attr |= OCFS2_APPEND_FL; | |
108 | if (flags & S_IMMUTABLE) | |
109 | oi->ip_attr |= OCFS2_IMMUTABLE_FL; | |
110 | if (flags & S_NOATIME) | |
111 | oi->ip_attr |= OCFS2_NOATIME_FL; | |
112 | if (flags & S_DIRSYNC) | |
113 | oi->ip_attr |= OCFS2_DIRSYNC_FL; | |
114 | } | |
115 | ||
6ca497a8 | 116 | struct inode *ocfs2_ilookup(struct super_block *sb, u64 blkno) |
117 | { | |
118 | struct ocfs2_find_inode_args args; | |
119 | ||
120 | args.fi_blkno = blkno; | |
121 | args.fi_flags = 0; | |
122 | args.fi_ino = ino_from_blkno(sb, blkno); | |
123 | args.fi_sysfile_type = 0; | |
124 | ||
125 | return ilookup5(sb, blkno, ocfs2_find_actor, &args); | |
126 | } | |
5fa0613e JK |
127 | struct inode *ocfs2_iget(struct ocfs2_super *osb, u64 blkno, unsigned flags, |
128 | int sysfile_type) | |
ccd979bd MF |
129 | { |
130 | struct inode *inode = NULL; | |
131 | struct super_block *sb = osb->sb; | |
132 | struct ocfs2_find_inode_args args; | |
133 | ||
ef6b689b | 134 | mlog(0, "(blkno = %llu)\n", (unsigned long long)blkno); |
ccd979bd MF |
135 | |
136 | /* Ok. By now we've either got the offsets passed to us by the | |
137 | * caller, or we just pulled them off the bh. Lets do some | |
138 | * sanity checks to make sure they're OK. */ | |
139 | if (blkno == 0) { | |
140 | inode = ERR_PTR(-EINVAL); | |
141 | mlog_errno(PTR_ERR(inode)); | |
142 | goto bail; | |
143 | } | |
144 | ||
145 | args.fi_blkno = blkno; | |
24c19ef4 | 146 | args.fi_flags = flags; |
ccd979bd | 147 | args.fi_ino = ino_from_blkno(sb, blkno); |
5fa0613e | 148 | args.fi_sysfile_type = sysfile_type; |
ccd979bd MF |
149 | |
150 | inode = iget5_locked(sb, args.fi_ino, ocfs2_find_actor, | |
151 | ocfs2_init_locked_inode, &args); | |
152 | /* inode was *not* in the inode cache. 2.6.x requires | |
153 | * us to do our own read_inode call and unlock it | |
154 | * afterwards. */ | |
155 | if (inode && inode->i_state & I_NEW) { | |
156 | mlog(0, "Inode was not in inode cache, reading it.\n"); | |
157 | ocfs2_read_locked_inode(inode, &args); | |
158 | unlock_new_inode(inode); | |
159 | } | |
160 | if (inode == NULL) { | |
161 | inode = ERR_PTR(-ENOMEM); | |
162 | mlog_errno(PTR_ERR(inode)); | |
163 | goto bail; | |
164 | } | |
165 | if (is_bad_inode(inode)) { | |
166 | iput(inode); | |
167 | inode = ERR_PTR(-ESTALE); | |
ccd979bd MF |
168 | goto bail; |
169 | } | |
170 | ||
171 | bail: | |
172 | if (!IS_ERR(inode)) { | |
b0697053 MF |
173 | mlog(0, "returning inode with number %llu\n", |
174 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 175 | mlog_exit_ptr(inode); |
6a1bd4a5 | 176 | } |
ccd979bd MF |
177 | |
178 | return inode; | |
179 | } | |
180 | ||
181 | ||
182 | /* | |
183 | * here's how inodes get read from disk: | |
184 | * iget5_locked -> find_actor -> OCFS2_FIND_ACTOR | |
185 | * found? : return the in-memory inode | |
186 | * not found? : get_new_inode -> OCFS2_INIT_LOCKED_INODE | |
187 | */ | |
188 | ||
189 | static int ocfs2_find_actor(struct inode *inode, void *opaque) | |
190 | { | |
191 | struct ocfs2_find_inode_args *args = NULL; | |
192 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
193 | int ret = 0; | |
194 | ||
ef6b689b | 195 | mlog(0, "(0x%p, %lu, 0x%p)\n", inode, inode->i_ino, opaque); |
ccd979bd MF |
196 | |
197 | args = opaque; | |
198 | ||
199 | mlog_bug_on_msg(!inode, "No inode in find actor!\n"); | |
200 | ||
201 | if (oi->ip_blkno != args->fi_blkno) | |
202 | goto bail; | |
203 | ||
ccd979bd MF |
204 | ret = 1; |
205 | bail: | |
206 | mlog_exit(ret); | |
207 | return ret; | |
208 | } | |
209 | ||
210 | /* | |
211 | * initialize the new inode, but don't do anything that would cause | |
212 | * us to sleep. | |
213 | * return 0 on success, 1 on failure | |
214 | */ | |
215 | static int ocfs2_init_locked_inode(struct inode *inode, void *opaque) | |
216 | { | |
217 | struct ocfs2_find_inode_args *args = opaque; | |
cb25797d JK |
218 | static struct lock_class_key ocfs2_quota_ip_alloc_sem_key, |
219 | ocfs2_file_ip_alloc_sem_key; | |
ccd979bd | 220 | |
ef6b689b | 221 | mlog(0, "inode = %p, opaque = %p\n", inode, opaque); |
ccd979bd MF |
222 | |
223 | inode->i_ino = args->fi_ino; | |
224 | OCFS2_I(inode)->ip_blkno = args->fi_blkno; | |
5fa0613e JK |
225 | if (args->fi_sysfile_type != 0) |
226 | lockdep_set_class(&inode->i_mutex, | |
227 | &ocfs2_sysfile_lock_key[args->fi_sysfile_type]); | |
cb25797d JK |
228 | if (args->fi_sysfile_type == USER_QUOTA_SYSTEM_INODE || |
229 | args->fi_sysfile_type == GROUP_QUOTA_SYSTEM_INODE || | |
230 | args->fi_sysfile_type == LOCAL_USER_QUOTA_SYSTEM_INODE || | |
231 | args->fi_sysfile_type == LOCAL_GROUP_QUOTA_SYSTEM_INODE) | |
232 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
233 | &ocfs2_quota_ip_alloc_sem_key); | |
234 | else | |
235 | lockdep_set_class(&OCFS2_I(inode)->ip_alloc_sem, | |
236 | &ocfs2_file_ip_alloc_sem_key); | |
ccd979bd MF |
237 | |
238 | mlog_exit(0); | |
239 | return 0; | |
240 | } | |
241 | ||
b657c95c JB |
242 | void ocfs2_populate_inode(struct inode *inode, struct ocfs2_dinode *fe, |
243 | int create_ino) | |
ccd979bd MF |
244 | { |
245 | struct super_block *sb; | |
246 | struct ocfs2_super *osb; | |
53da4939 | 247 | int use_plocks = 1; |
ccd979bd | 248 | |
ef6b689b TM |
249 | mlog(0, "(0x%p, size:%llu)\n", inode, |
250 | (unsigned long long)le64_to_cpu(fe->i_size)); | |
ccd979bd MF |
251 | |
252 | sb = inode->i_sb; | |
253 | osb = OCFS2_SB(sb); | |
254 | ||
53da4939 MF |
255 | if ((osb->s_mount_opt & OCFS2_MOUNT_LOCALFLOCKS) || |
256 | ocfs2_mount_local(osb) || !ocfs2_stack_supports_plocks()) | |
257 | use_plocks = 0; | |
258 | ||
b657c95c JB |
259 | /* |
260 | * These have all been checked by ocfs2_read_inode_block() or set | |
261 | * by ocfs2_mknod_locked(), so a failure is a code bug. | |
262 | */ | |
263 | BUG_ON(!OCFS2_IS_VALID_DINODE(fe)); /* This means that read_inode | |
264 | cannot create a superblock | |
265 | inode today. change if | |
266 | that is needed. */ | |
267 | BUG_ON(!(fe->i_flags & cpu_to_le32(OCFS2_VALID_FL))); | |
268 | BUG_ON(le32_to_cpu(fe->i_fs_generation) != osb->fs_generation); | |
ccd979bd | 269 | |
ccd979bd | 270 | |
8110b073 MF |
271 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); |
272 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); | |
15b1e36b | 273 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
8110b073 | 274 | |
ccd979bd MF |
275 | inode->i_version = 1; |
276 | inode->i_generation = le32_to_cpu(fe->i_generation); | |
277 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); | |
278 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
279 | inode->i_uid = le32_to_cpu(fe->i_uid); | |
280 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
ccd979bd MF |
281 | |
282 | /* Fast symlinks will have i_size but no allocated clusters. */ | |
283 | if (S_ISLNK(inode->i_mode) && !fe->i_clusters) | |
284 | inode->i_blocks = 0; | |
285 | else | |
8110b073 | 286 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd | 287 | inode->i_mapping->a_ops = &ocfs2_aops; |
ccd979bd MF |
288 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
289 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
290 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
291 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
292 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
293 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
294 | ||
295 | if (OCFS2_I(inode)->ip_blkno != le64_to_cpu(fe->i_blkno)) | |
296 | mlog(ML_ERROR, | |
b0697053 MF |
297 | "ip_blkno %llu != i_blkno %llu!\n", |
298 | (unsigned long long)OCFS2_I(inode)->ip_blkno, | |
1ca1a111 | 299 | (unsigned long long)le64_to_cpu(fe->i_blkno)); |
ccd979bd | 300 | |
198a1ca3 | 301 | inode->i_nlink = ocfs2_read_links_count(fe); |
ccd979bd | 302 | |
bbbd0eb3 | 303 | if (fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) { |
24c19ef4 | 304 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_SYSTEM_FILE; |
bbbd0eb3 JK |
305 | inode->i_flags |= S_NOQUOTA; |
306 | } | |
24c19ef4 | 307 | |
ccd979bd MF |
308 | if (fe->i_flags & cpu_to_le32(OCFS2_LOCAL_ALLOC_FL)) { |
309 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
310 | mlog(0, "local alloc inode: i_ino=%lu\n", inode->i_ino); | |
311 | } else if (fe->i_flags & cpu_to_le32(OCFS2_BITMAP_FL)) { | |
312 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_BITMAP; | |
1a224ad1 JK |
313 | } else if (fe->i_flags & cpu_to_le32(OCFS2_QUOTA_FL)) { |
314 | inode->i_flags |= S_NOQUOTA; | |
ccd979bd MF |
315 | } else if (fe->i_flags & cpu_to_le32(OCFS2_SUPER_BLOCK_FL)) { |
316 | mlog(0, "superblock inode: i_ino=%lu\n", inode->i_ino); | |
317 | /* we can't actually hit this as read_inode can't | |
318 | * handle superblocks today ;-) */ | |
319 | BUG(); | |
320 | } | |
321 | ||
322 | switch (inode->i_mode & S_IFMT) { | |
323 | case S_IFREG: | |
53da4939 MF |
324 | if (use_plocks) |
325 | inode->i_fop = &ocfs2_fops; | |
326 | else | |
327 | inode->i_fop = &ocfs2_fops_no_plocks; | |
ccd979bd MF |
328 | inode->i_op = &ocfs2_file_iops; |
329 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
330 | break; | |
331 | case S_IFDIR: | |
332 | inode->i_op = &ocfs2_dir_iops; | |
53da4939 MF |
333 | if (use_plocks) |
334 | inode->i_fop = &ocfs2_dops; | |
335 | else | |
336 | inode->i_fop = &ocfs2_dops_no_plocks; | |
ccd979bd | 337 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
5e98d492 | 338 | OCFS2_I(inode)->ip_dir_lock_gen = 1; |
ccd979bd MF |
339 | break; |
340 | case S_IFLNK: | |
341 | if (ocfs2_inode_is_fast_symlink(inode)) | |
342 | inode->i_op = &ocfs2_fast_symlink_inode_operations; | |
343 | else | |
344 | inode->i_op = &ocfs2_symlink_inode_operations; | |
345 | i_size_write(inode, le64_to_cpu(fe->i_size)); | |
346 | break; | |
347 | default: | |
348 | inode->i_op = &ocfs2_special_file_iops; | |
349 | init_special_inode(inode, inode->i_mode, | |
350 | inode->i_rdev); | |
351 | break; | |
352 | } | |
353 | ||
24c19ef4 MF |
354 | if (create_ino) { |
355 | inode->i_ino = ino_from_blkno(inode->i_sb, | |
356 | le64_to_cpu(fe->i_blkno)); | |
357 | ||
358 | /* | |
359 | * If we ever want to create system files from kernel, | |
360 | * the generation argument to | |
361 | * ocfs2_inode_lock_res_init() will have to change. | |
362 | */ | |
1ca1a111 | 363 | BUG_ON(le32_to_cpu(fe->i_flags) & OCFS2_SYSTEM_FL); |
24c19ef4 | 364 | |
e63aecb6 | 365 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 | 366 | OCFS2_LOCK_TYPE_META, 0, inode); |
50008630 TY |
367 | |
368 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, | |
369 | OCFS2_LOCK_TYPE_OPEN, 0, inode); | |
24c19ef4 MF |
370 | } |
371 | ||
ccd979bd | 372 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_rw_lockres, |
24c19ef4 MF |
373 | OCFS2_LOCK_TYPE_RW, inode->i_generation, |
374 | inode); | |
375 | ||
ca4d147e | 376 | ocfs2_set_inode_flags(inode); |
ca4d147e | 377 | |
13821151 TM |
378 | OCFS2_I(inode)->ip_last_used_slot = 0; |
379 | OCFS2_I(inode)->ip_last_used_group = 0; | |
e3b4a97d MF |
380 | |
381 | if (S_ISDIR(inode->i_mode)) | |
382 | ocfs2_resv_set_type(&OCFS2_I(inode)->ip_la_data_resv, | |
383 | OCFS2_RESV_FLAG_DIR); | |
b657c95c | 384 | mlog_exit_void(); |
ccd979bd MF |
385 | } |
386 | ||
387 | static int ocfs2_read_locked_inode(struct inode *inode, | |
388 | struct ocfs2_find_inode_args *args) | |
389 | { | |
390 | struct super_block *sb; | |
391 | struct ocfs2_super *osb; | |
392 | struct ocfs2_dinode *fe; | |
393 | struct buffer_head *bh = NULL; | |
24c19ef4 MF |
394 | int status, can_lock; |
395 | u32 generation = 0; | |
ccd979bd | 396 | |
ef6b689b | 397 | mlog(0, "(0x%p, 0x%p)\n", inode, args); |
ccd979bd MF |
398 | |
399 | status = -EINVAL; | |
400 | if (inode == NULL || inode->i_sb == NULL) { | |
401 | mlog(ML_ERROR, "bad inode\n"); | |
24c19ef4 | 402 | return status; |
ccd979bd MF |
403 | } |
404 | sb = inode->i_sb; | |
405 | osb = OCFS2_SB(sb); | |
406 | ||
407 | if (!args) { | |
408 | mlog(ML_ERROR, "bad inode args\n"); | |
409 | make_bad_inode(inode); | |
24c19ef4 MF |
410 | return status; |
411 | } | |
412 | ||
413 | /* | |
414 | * To improve performance of cold-cache inode stats, we take | |
415 | * the cluster lock here if possible. | |
416 | * | |
417 | * Generally, OCFS2 never trusts the contents of an inode | |
418 | * unless it's holding a cluster lock, so taking it here isn't | |
419 | * a correctness issue as much as it is a performance | |
420 | * improvement. | |
421 | * | |
422 | * There are three times when taking the lock is not a good idea: | |
423 | * | |
424 | * 1) During startup, before we have initialized the DLM. | |
425 | * | |
426 | * 2) If we are reading certain system files which never get | |
427 | * cluster locks (local alloc, truncate log). | |
428 | * | |
429 | * 3) If the process doing the iget() is responsible for | |
430 | * orphan dir recovery. We're holding the orphan dir lock and | |
431 | * can get into a deadlock with another process on another | |
432 | * node in ->delete_inode(). | |
433 | * | |
434 | * #1 and #2 can be simply solved by never taking the lock | |
435 | * here for system files (which are the only type we read | |
436 | * during mount). It's a heavier approach, but our main | |
b595076a | 437 | * concern is user-accessible files anyway. |
24c19ef4 MF |
438 | * |
439 | * #3 works itself out because we'll eventually take the | |
440 | * cluster lock before trusting anything anyway. | |
441 | */ | |
442 | can_lock = !(args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
50008630 | 443 | && !(args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) |
c271c5c2 | 444 | && !ocfs2_mount_local(osb); |
24c19ef4 MF |
445 | |
446 | /* | |
447 | * To maintain backwards compatibility with older versions of | |
448 | * ocfs2-tools, we still store the generation value for system | |
449 | * files. The only ones that actually matter to userspace are | |
450 | * the journals, but it's easier and inexpensive to just flag | |
451 | * all system files similarly. | |
452 | */ | |
453 | if (args->fi_flags & OCFS2_FI_FLAG_SYSFILE) | |
454 | generation = osb->fs_generation; | |
455 | ||
e63aecb6 | 456 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_inode_lockres, |
24c19ef4 MF |
457 | OCFS2_LOCK_TYPE_META, |
458 | generation, inode); | |
459 | ||
50008630 TY |
460 | ocfs2_inode_lock_res_init(&OCFS2_I(inode)->ip_open_lockres, |
461 | OCFS2_LOCK_TYPE_OPEN, | |
462 | 0, inode); | |
463 | ||
24c19ef4 | 464 | if (can_lock) { |
50008630 TY |
465 | status = ocfs2_open_lock(inode); |
466 | if (status) { | |
467 | make_bad_inode(inode); | |
468 | mlog_errno(status); | |
469 | return status; | |
470 | } | |
e63aecb6 | 471 | status = ocfs2_inode_lock(inode, NULL, 0); |
24c19ef4 MF |
472 | if (status) { |
473 | make_bad_inode(inode); | |
474 | mlog_errno(status); | |
475 | return status; | |
476 | } | |
ccd979bd MF |
477 | } |
478 | ||
50008630 TY |
479 | if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) { |
480 | status = ocfs2_try_open_lock(inode, 0); | |
481 | if (status) { | |
2bd63216 | 482 | make_bad_inode(inode); |
50008630 TY |
483 | return status; |
484 | } | |
485 | } | |
486 | ||
b657c95c JB |
487 | if (can_lock) { |
488 | status = ocfs2_read_inode_block_full(inode, &bh, | |
489 | OCFS2_BH_IGNORE_CACHE); | |
490 | } else { | |
da1e9098 | 491 | status = ocfs2_read_blocks_sync(osb, args->fi_blkno, 1, &bh); |
f5ce5a08 SM |
492 | /* |
493 | * If buffer is in jbd, then its checksum may not have been | |
494 | * computed as yet. | |
495 | */ | |
496 | if (!status && !buffer_jbd(bh)) | |
b657c95c JB |
497 | status = ocfs2_validate_inode_block(osb->sb, bh); |
498 | } | |
ccd979bd MF |
499 | if (status < 0) { |
500 | mlog_errno(status); | |
ccd979bd MF |
501 | goto bail; |
502 | } | |
503 | ||
24c19ef4 | 504 | status = -EINVAL; |
ccd979bd | 505 | fe = (struct ocfs2_dinode *) bh->b_data; |
ccd979bd | 506 | |
24c19ef4 MF |
507 | /* |
508 | * This is a code bug. Right now the caller needs to | |
509 | * understand whether it is asking for a system file inode or | |
510 | * not so the proper lock names can be built. | |
511 | */ | |
512 | mlog_bug_on_msg(!!(fe->i_flags & cpu_to_le32(OCFS2_SYSTEM_FL)) != | |
513 | !!(args->fi_flags & OCFS2_FI_FLAG_SYSFILE), | |
514 | "Inode %llu: system file state is ambigous\n", | |
515 | (unsigned long long)args->fi_blkno); | |
ccd979bd MF |
516 | |
517 | if (S_ISCHR(le16_to_cpu(fe->i_mode)) || | |
518 | S_ISBLK(le16_to_cpu(fe->i_mode))) | |
b657c95c | 519 | inode->i_rdev = huge_decode_dev(le64_to_cpu(fe->id1.dev1.i_rdev)); |
ccd979bd | 520 | |
b657c95c | 521 | ocfs2_populate_inode(inode, fe, 0); |
ccd979bd MF |
522 | |
523 | BUG_ON(args->fi_blkno != le64_to_cpu(fe->i_blkno)); | |
524 | ||
ccd979bd MF |
525 | status = 0; |
526 | ||
527 | bail: | |
24c19ef4 | 528 | if (can_lock) |
e63aecb6 | 529 | ocfs2_inode_unlock(inode, 0); |
24c19ef4 MF |
530 | |
531 | if (status < 0) | |
532 | make_bad_inode(inode); | |
533 | ||
ccd979bd MF |
534 | if (args && bh) |
535 | brelse(bh); | |
536 | ||
537 | mlog_exit(status); | |
538 | return status; | |
539 | } | |
540 | ||
541 | void ocfs2_sync_blockdev(struct super_block *sb) | |
542 | { | |
543 | sync_blockdev(sb->s_bdev); | |
544 | } | |
545 | ||
546 | static int ocfs2_truncate_for_delete(struct ocfs2_super *osb, | |
547 | struct inode *inode, | |
548 | struct buffer_head *fe_bh) | |
549 | { | |
550 | int status = 0; | |
ccd979bd | 551 | struct ocfs2_dinode *fe; |
60b11392 | 552 | handle_t *handle = NULL; |
ccd979bd | 553 | |
ccd979bd MF |
554 | fe = (struct ocfs2_dinode *) fe_bh->b_data; |
555 | ||
1afc32b9 MF |
556 | /* |
557 | * This check will also skip truncate of inodes with inline | |
558 | * data and fast symlinks. | |
559 | */ | |
3a0782d0 | 560 | if (fe->i_clusters) { |
2b4e30fb JB |
561 | if (ocfs2_should_order_data(inode)) |
562 | ocfs2_begin_ordered_truncate(inode, 0); | |
563 | ||
60b11392 MF |
564 | handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS); |
565 | if (IS_ERR(handle)) { | |
566 | status = PTR_ERR(handle); | |
0350cb07 | 567 | handle = NULL; |
60b11392 MF |
568 | mlog_errno(status); |
569 | goto out; | |
570 | } | |
571 | ||
0cf2f763 JB |
572 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), |
573 | fe_bh, | |
13723d00 | 574 | OCFS2_JOURNAL_ACCESS_WRITE); |
60b11392 MF |
575 | if (status < 0) { |
576 | mlog_errno(status); | |
577 | goto out; | |
578 | } | |
579 | ||
580 | i_size_write(inode, 0); | |
581 | ||
582 | status = ocfs2_mark_inode_dirty(handle, inode, fe_bh); | |
583 | if (status < 0) { | |
584 | mlog_errno(status); | |
585 | goto out; | |
586 | } | |
587 | ||
588 | ocfs2_commit_trans(osb, handle); | |
589 | handle = NULL; | |
590 | ||
78f94673 | 591 | status = ocfs2_commit_truncate(osb, inode, fe_bh); |
3a0782d0 MF |
592 | if (status < 0) { |
593 | mlog_errno(status); | |
594 | goto out; | |
595 | } | |
ccd979bd | 596 | } |
ccd979bd | 597 | |
60b11392 MF |
598 | out: |
599 | if (handle) | |
600 | ocfs2_commit_trans(osb, handle); | |
ccd979bd MF |
601 | mlog_exit(status); |
602 | return status; | |
603 | } | |
604 | ||
605 | static int ocfs2_remove_inode(struct inode *inode, | |
606 | struct buffer_head *di_bh, | |
607 | struct inode *orphan_dir_inode, | |
608 | struct buffer_head *orphan_dir_bh) | |
609 | { | |
610 | int status; | |
611 | struct inode *inode_alloc_inode = NULL; | |
612 | struct buffer_head *inode_alloc_bh = NULL; | |
1fabe148 | 613 | handle_t *handle; |
ccd979bd MF |
614 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); |
615 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; | |
616 | ||
617 | inode_alloc_inode = | |
618 | ocfs2_get_system_file_inode(osb, INODE_ALLOC_SYSTEM_INODE, | |
619 | le16_to_cpu(di->i_suballoc_slot)); | |
620 | if (!inode_alloc_inode) { | |
621 | status = -EEXIST; | |
622 | mlog_errno(status); | |
623 | goto bail; | |
624 | } | |
625 | ||
1b1dcc1b | 626 | mutex_lock(&inode_alloc_inode->i_mutex); |
e63aecb6 | 627 | status = ocfs2_inode_lock(inode_alloc_inode, &inode_alloc_bh, 1); |
ccd979bd | 628 | if (status < 0) { |
1b1dcc1b | 629 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
630 | |
631 | mlog_errno(status); | |
632 | goto bail; | |
633 | } | |
634 | ||
a90714c1 | 635 | handle = ocfs2_start_trans(osb, OCFS2_DELETE_INODE_CREDITS + |
9b7895ef | 636 | ocfs2_quota_trans_credits(inode->i_sb)); |
ccd979bd MF |
637 | if (IS_ERR(handle)) { |
638 | status = PTR_ERR(handle); | |
639 | mlog_errno(status); | |
640 | goto bail_unlock; | |
641 | } | |
642 | ||
d4cd1871 LD |
643 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
644 | status = ocfs2_orphan_del(osb, handle, orphan_dir_inode, inode, | |
645 | orphan_dir_bh); | |
646 | if (status < 0) { | |
647 | mlog_errno(status); | |
648 | goto bail_commit; | |
649 | } | |
ccd979bd MF |
650 | } |
651 | ||
652 | /* set the inodes dtime */ | |
0cf2f763 | 653 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), di_bh, |
13723d00 | 654 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
655 | if (status < 0) { |
656 | mlog_errno(status); | |
657 | goto bail_commit; | |
658 | } | |
659 | ||
660 | di->i_dtime = cpu_to_le64(CURRENT_TIME.tv_sec); | |
4092d49f | 661 | di->i_flags &= cpu_to_le32(~(OCFS2_VALID_FL | OCFS2_ORPHANED_FL)); |
ec20cec7 | 662 | ocfs2_journal_dirty(handle, di_bh); |
ccd979bd | 663 | |
8cb471e8 | 664 | ocfs2_remove_from_cache(INODE_CACHE(inode), di_bh); |
63936dda | 665 | dquot_free_inode(inode); |
ccd979bd MF |
666 | |
667 | status = ocfs2_free_dinode(handle, inode_alloc_inode, | |
668 | inode_alloc_bh, di); | |
669 | if (status < 0) | |
670 | mlog_errno(status); | |
671 | ||
672 | bail_commit: | |
02dc1af4 | 673 | ocfs2_commit_trans(osb, handle); |
ccd979bd | 674 | bail_unlock: |
e63aecb6 | 675 | ocfs2_inode_unlock(inode_alloc_inode, 1); |
1b1dcc1b | 676 | mutex_unlock(&inode_alloc_inode->i_mutex); |
ccd979bd MF |
677 | brelse(inode_alloc_bh); |
678 | bail: | |
679 | iput(inode_alloc_inode); | |
680 | ||
681 | return status; | |
682 | } | |
683 | ||
2bd63216 | 684 | /* |
b4df6ed8 MF |
685 | * Serialize with orphan dir recovery. If the process doing |
686 | * recovery on this orphan dir does an iget() with the dir | |
687 | * i_mutex held, we'll deadlock here. Instead we detect this | |
688 | * and exit early - recovery will wipe this inode for us. | |
689 | */ | |
690 | static int ocfs2_check_orphan_recovery_state(struct ocfs2_super *osb, | |
691 | int slot) | |
692 | { | |
693 | int ret = 0; | |
694 | ||
695 | spin_lock(&osb->osb_lock); | |
696 | if (ocfs2_node_map_test_bit(osb, &osb->osb_recovering_orphan_dirs, slot)) { | |
697 | mlog(0, "Recovery is happening on orphan dir %d, will skip " | |
698 | "this inode\n", slot); | |
699 | ret = -EDEADLK; | |
700 | goto out; | |
701 | } | |
702 | /* This signals to the orphan recovery process that it should | |
703 | * wait for us to handle the wipe. */ | |
704 | osb->osb_orphan_wipes[slot]++; | |
705 | out: | |
706 | spin_unlock(&osb->osb_lock); | |
707 | return ret; | |
708 | } | |
709 | ||
710 | static void ocfs2_signal_wipe_completion(struct ocfs2_super *osb, | |
711 | int slot) | |
712 | { | |
713 | spin_lock(&osb->osb_lock); | |
714 | osb->osb_orphan_wipes[slot]--; | |
715 | spin_unlock(&osb->osb_lock); | |
716 | ||
717 | wake_up(&osb->osb_wipe_event); | |
718 | } | |
719 | ||
ccd979bd MF |
720 | static int ocfs2_wipe_inode(struct inode *inode, |
721 | struct buffer_head *di_bh) | |
722 | { | |
d577632e | 723 | int status, orphaned_slot = -1; |
ccd979bd MF |
724 | struct inode *orphan_dir_inode = NULL; |
725 | struct buffer_head *orphan_dir_bh = NULL; | |
726 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
d4cd1871 | 727 | struct ocfs2_dinode *di = (struct ocfs2_dinode *) di_bh->b_data; |
ccd979bd | 728 | |
d4cd1871 LD |
729 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { |
730 | orphaned_slot = le16_to_cpu(di->i_orphaned_slot); | |
b4df6ed8 | 731 | |
d4cd1871 LD |
732 | status = ocfs2_check_orphan_recovery_state(osb, orphaned_slot); |
733 | if (status) | |
734 | return status; | |
b4df6ed8 | 735 | |
d4cd1871 LD |
736 | orphan_dir_inode = ocfs2_get_system_file_inode(osb, |
737 | ORPHAN_DIR_SYSTEM_INODE, | |
738 | orphaned_slot); | |
739 | if (!orphan_dir_inode) { | |
740 | status = -EEXIST; | |
741 | mlog_errno(status); | |
742 | goto bail; | |
743 | } | |
ccd979bd | 744 | |
d4cd1871 LD |
745 | /* Lock the orphan dir. The lock will be held for the entire |
746 | * delete_inode operation. We do this now to avoid races with | |
747 | * recovery completion on other nodes. */ | |
748 | mutex_lock(&orphan_dir_inode->i_mutex); | |
749 | status = ocfs2_inode_lock(orphan_dir_inode, &orphan_dir_bh, 1); | |
750 | if (status < 0) { | |
751 | mutex_unlock(&orphan_dir_inode->i_mutex); | |
ccd979bd | 752 | |
d4cd1871 LD |
753 | mlog_errno(status); |
754 | goto bail; | |
755 | } | |
ccd979bd MF |
756 | } |
757 | ||
758 | /* we do this while holding the orphan dir lock because we | |
34d024f8 MF |
759 | * don't want recovery being run from another node to try an |
760 | * inode delete underneath us -- this will result in two nodes | |
ccd979bd MF |
761 | * truncating the same file! */ |
762 | status = ocfs2_truncate_for_delete(osb, inode, di_bh); | |
763 | if (status < 0) { | |
764 | mlog_errno(status); | |
765 | goto bail_unlock_dir; | |
766 | } | |
767 | ||
9b7895ef MF |
768 | /* Remove any dir index tree */ |
769 | if (S_ISDIR(inode->i_mode)) { | |
770 | status = ocfs2_dx_dir_truncate(inode, di_bh); | |
771 | if (status) { | |
772 | mlog_errno(status); | |
773 | goto bail_unlock_dir; | |
774 | } | |
775 | } | |
776 | ||
cf1d6c76 TY |
777 | /*Free extended attribute resources associated with this inode.*/ |
778 | status = ocfs2_xattr_remove(inode, di_bh); | |
779 | if (status < 0) { | |
780 | mlog_errno(status); | |
781 | goto bail_unlock_dir; | |
782 | } | |
783 | ||
8b2c0dba TM |
784 | status = ocfs2_remove_refcount_tree(inode, di_bh); |
785 | if (status < 0) { | |
786 | mlog_errno(status); | |
787 | goto bail_unlock_dir; | |
788 | } | |
789 | ||
ccd979bd MF |
790 | status = ocfs2_remove_inode(inode, di_bh, orphan_dir_inode, |
791 | orphan_dir_bh); | |
792 | if (status < 0) | |
793 | mlog_errno(status); | |
794 | ||
795 | bail_unlock_dir: | |
d4cd1871 LD |
796 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR) |
797 | return status; | |
798 | ||
e63aecb6 | 799 | ocfs2_inode_unlock(orphan_dir_inode, 1); |
1b1dcc1b | 800 | mutex_unlock(&orphan_dir_inode->i_mutex); |
ccd979bd MF |
801 | brelse(orphan_dir_bh); |
802 | bail: | |
803 | iput(orphan_dir_inode); | |
b4df6ed8 | 804 | ocfs2_signal_wipe_completion(osb, orphaned_slot); |
ccd979bd MF |
805 | |
806 | return status; | |
807 | } | |
808 | ||
809 | /* There is a series of simple checks that should be done before a | |
34d024f8 | 810 | * trylock is even considered. Encapsulate those in this function. */ |
ccd979bd MF |
811 | static int ocfs2_inode_is_valid_to_delete(struct inode *inode) |
812 | { | |
813 | int ret = 0; | |
814 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
815 | struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); | |
816 | ||
817 | /* We shouldn't be getting here for the root directory | |
818 | * inode.. */ | |
819 | if (inode == osb->root_inode) { | |
820 | mlog(ML_ERROR, "Skipping delete of root inode.\n"); | |
821 | goto bail; | |
822 | } | |
823 | ||
34d024f8 | 824 | /* If we're coming from downconvert_thread we can't go into our own |
ccd979bd MF |
825 | * voting [hello, deadlock city!], so unforuntately we just |
826 | * have to skip deleting this guy. That's OK though because | |
827 | * the node who's doing the actual deleting should handle it | |
828 | * anyway. */ | |
34d024f8 | 829 | if (current == osb->dc_task) { |
ccd979bd | 830 | mlog(0, "Skipping delete of %lu because we're currently " |
34d024f8 | 831 | "in downconvert\n", inode->i_ino); |
ccd979bd MF |
832 | goto bail; |
833 | } | |
834 | ||
835 | spin_lock(&oi->ip_lock); | |
836 | /* OCFS2 *never* deletes system files. This should technically | |
837 | * never get here as system file inodes should always have a | |
838 | * positive link count. */ | |
839 | if (oi->ip_flags & OCFS2_INODE_SYSTEM_FILE) { | |
b0697053 MF |
840 | mlog(ML_ERROR, "Skipping delete of system file %llu\n", |
841 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
842 | goto bail_unlock; |
843 | } | |
844 | ||
34d024f8 MF |
845 | /* If we have allowd wipe of this inode for another node, it |
846 | * will be marked here so we can safely skip it. Recovery will | |
847 | * cleanup any inodes we might inadvertantly skip here. */ | |
ccd979bd MF |
848 | if (oi->ip_flags & OCFS2_INODE_SKIP_DELETE) { |
849 | mlog(0, "Skipping delete of %lu because another node " | |
850 | "has done this for us.\n", inode->i_ino); | |
851 | goto bail_unlock; | |
852 | } | |
853 | ||
854 | ret = 1; | |
855 | bail_unlock: | |
856 | spin_unlock(&oi->ip_lock); | |
857 | bail: | |
858 | return ret; | |
859 | } | |
860 | ||
861 | /* Query the cluster to determine whether we should wipe an inode from | |
862 | * disk or not. | |
863 | * | |
864 | * Requires the inode to have the cluster lock. */ | |
865 | static int ocfs2_query_inode_wipe(struct inode *inode, | |
866 | struct buffer_head *di_bh, | |
867 | int *wipe) | |
868 | { | |
869 | int status = 0; | |
870 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
871 | struct ocfs2_dinode *di; | |
872 | ||
873 | *wipe = 0; | |
874 | ||
875 | /* While we were waiting for the cluster lock in | |
876 | * ocfs2_delete_inode, another node might have asked to delete | |
877 | * the inode. Recheck our flags to catch this. */ | |
878 | if (!ocfs2_inode_is_valid_to_delete(inode)) { | |
b0697053 MF |
879 | mlog(0, "Skipping delete of %llu because flags changed\n", |
880 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
881 | goto bail; |
882 | } | |
883 | ||
884 | /* Now that we have an up to date inode, we can double check | |
885 | * the link count. */ | |
886 | if (inode->i_nlink) { | |
b0697053 MF |
887 | mlog(0, "Skipping delete of %llu because nlink = %u\n", |
888 | (unsigned long long)oi->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
889 | goto bail; |
890 | } | |
891 | ||
892 | /* Do some basic inode verification... */ | |
893 | di = (struct ocfs2_dinode *) di_bh->b_data; | |
d4cd1871 LD |
894 | if (!(di->i_flags & cpu_to_le32(OCFS2_ORPHANED_FL)) && |
895 | !(oi->ip_flags & OCFS2_INODE_SKIP_ORPHAN_DIR)) { | |
b54c2ca4 TY |
896 | /* |
897 | * Inodes in the orphan dir must have ORPHANED_FL. The only | |
898 | * inodes that come back out of the orphan dir are reflink | |
899 | * targets. A reflink target may be moved out of the orphan | |
900 | * dir between the time we scan the directory and the time we | |
901 | * process it. This would lead to HAS_REFCOUNT_FL being set but | |
902 | * ORPHANED_FL not. | |
903 | */ | |
904 | if (di->i_dyn_features & cpu_to_le16(OCFS2_HAS_REFCOUNT_FL)) { | |
905 | mlog(0, "Reflinked inode %llu is no longer orphaned. " | |
906 | "it shouldn't be deleted\n", | |
907 | (unsigned long long)oi->ip_blkno); | |
908 | goto bail; | |
909 | } | |
910 | ||
ccd979bd MF |
911 | /* for lack of a better error? */ |
912 | status = -EEXIST; | |
913 | mlog(ML_ERROR, | |
b0697053 | 914 | "Inode %llu (on-disk %llu) not orphaned! " |
ccd979bd | 915 | "Disk flags 0x%x, inode flags 0x%x\n", |
b0697053 | 916 | (unsigned long long)oi->ip_blkno, |
1ca1a111 MF |
917 | (unsigned long long)le64_to_cpu(di->i_blkno), |
918 | le32_to_cpu(di->i_flags), oi->ip_flags); | |
ccd979bd MF |
919 | goto bail; |
920 | } | |
921 | ||
922 | /* has someone already deleted us?! baaad... */ | |
923 | if (di->i_dtime) { | |
924 | status = -EEXIST; | |
925 | mlog_errno(status); | |
926 | goto bail; | |
927 | } | |
928 | ||
6f16bf65 MF |
929 | /* |
930 | * This is how ocfs2 determines whether an inode is still live | |
931 | * within the cluster. Every node takes a shared read lock on | |
932 | * the inode open lock in ocfs2_read_locked_inode(). When we | |
933 | * get to ->delete_inode(), each node tries to convert it's | |
934 | * lock to an exclusive. Trylocks are serialized by the inode | |
935 | * meta data lock. If the upconvert suceeds, we know the inode | |
936 | * is no longer live and can be deleted. | |
937 | * | |
938 | * Though we call this with the meta data lock held, the | |
939 | * trylock keeps us from ABBA deadlock. | |
940 | */ | |
941 | status = ocfs2_try_open_lock(inode, 1); | |
50008630 | 942 | if (status == -EAGAIN) { |
ccd979bd | 943 | status = 0; |
2759236f | 944 | mlog(0, "Skipping delete of %llu because it is in use on " |
b0697053 | 945 | "other nodes\n", (unsigned long long)oi->ip_blkno); |
ccd979bd MF |
946 | goto bail; |
947 | } | |
948 | if (status < 0) { | |
949 | mlog_errno(status); | |
950 | goto bail; | |
951 | } | |
952 | ||
50008630 TY |
953 | *wipe = 1; |
954 | mlog(0, "Inode %llu is ok to wipe from orphan dir %u\n", | |
955 | (unsigned long long)oi->ip_blkno, | |
956 | le16_to_cpu(di->i_orphaned_slot)); | |
ccd979bd MF |
957 | |
958 | bail: | |
959 | return status; | |
960 | } | |
961 | ||
962 | /* Support function for ocfs2_delete_inode. Will help us keep the | |
963 | * inode data in a consistent state for clear_inode. Always truncates | |
964 | * pages, optionally sync's them first. */ | |
965 | static void ocfs2_cleanup_delete_inode(struct inode *inode, | |
966 | int sync_data) | |
967 | { | |
b0697053 MF |
968 | mlog(0, "Cleanup inode %llu, sync = %d\n", |
969 | (unsigned long long)OCFS2_I(inode)->ip_blkno, sync_data); | |
ccd979bd MF |
970 | if (sync_data) |
971 | write_inode_now(inode, 1); | |
972 | truncate_inode_pages(&inode->i_data, 0); | |
973 | } | |
974 | ||
066d92dc | 975 | static void ocfs2_delete_inode(struct inode *inode) |
ccd979bd MF |
976 | { |
977 | int wipe, status; | |
e4b963f1 | 978 | sigset_t oldset; |
ccd979bd MF |
979 | struct buffer_head *di_bh = NULL; |
980 | ||
ef6b689b | 981 | mlog(0, "(inode->i_ino = %lu)\n", inode->i_ino); |
ccd979bd | 982 | |
a90714c1 JK |
983 | /* When we fail in read_inode() we mark inode as bad. The second test |
984 | * catches the case when inode allocation fails before allocating | |
985 | * a block for inode. */ | |
986 | if (is_bad_inode(inode) || !OCFS2_I(inode)->ip_blkno) { | |
ccd979bd MF |
987 | mlog(0, "Skipping delete of bad inode\n"); |
988 | goto bail; | |
989 | } | |
990 | ||
871a2931 | 991 | dquot_initialize(inode); |
907f4554 | 992 | |
ccd979bd MF |
993 | if (!ocfs2_inode_is_valid_to_delete(inode)) { |
994 | /* It's probably not necessary to truncate_inode_pages | |
995 | * here but we do it for safety anyway (it will most | |
996 | * likely be a no-op anyway) */ | |
997 | ocfs2_cleanup_delete_inode(inode, 0); | |
998 | goto bail; | |
999 | } | |
1000 | ||
1001 | /* We want to block signals in delete_inode as the lock and | |
1002 | * messaging paths may return us -ERESTARTSYS. Which would | |
1003 | * cause us to exit early, resulting in inodes being orphaned | |
1004 | * forever. */ | |
e4b963f1 | 1005 | ocfs2_block_signals(&oldset); |
ccd979bd | 1006 | |
6ca497a8 | 1007 | /* |
1008 | * Synchronize us against ocfs2_get_dentry. We take this in | |
1009 | * shared mode so that all nodes can still concurrently | |
1010 | * process deletes. | |
1011 | */ | |
1012 | status = ocfs2_nfs_sync_lock(OCFS2_SB(inode->i_sb), 0); | |
1013 | if (status < 0) { | |
1014 | mlog(ML_ERROR, "getting nfs sync lock(PR) failed %d\n", status); | |
1015 | ocfs2_cleanup_delete_inode(inode, 0); | |
1016 | goto bail_unblock; | |
1017 | } | |
ccd979bd MF |
1018 | /* Lock down the inode. This gives us an up to date view of |
1019 | * it's metadata (for verification), and allows us to | |
34d024f8 | 1020 | * serialize delete_inode on multiple nodes. |
ccd979bd MF |
1021 | * |
1022 | * Even though we might be doing a truncate, we don't take the | |
1023 | * allocation lock here as it won't be needed - nobody will | |
1024 | * have the file open. | |
1025 | */ | |
e63aecb6 | 1026 | status = ocfs2_inode_lock(inode, &di_bh, 1); |
ccd979bd MF |
1027 | if (status < 0) { |
1028 | if (status != -ENOENT) | |
1029 | mlog_errno(status); | |
1030 | ocfs2_cleanup_delete_inode(inode, 0); | |
6ca497a8 | 1031 | goto bail_unlock_nfs_sync; |
ccd979bd MF |
1032 | } |
1033 | ||
1034 | /* Query the cluster. This will be the final decision made | |
1035 | * before we go ahead and wipe the inode. */ | |
1036 | status = ocfs2_query_inode_wipe(inode, di_bh, &wipe); | |
1037 | if (!wipe || status < 0) { | |
34d024f8 | 1038 | /* Error and remote inode busy both mean we won't be |
ccd979bd MF |
1039 | * removing the inode, so they take almost the same |
1040 | * path. */ | |
1041 | if (status < 0) | |
1042 | mlog_errno(status); | |
1043 | ||
34d024f8 MF |
1044 | /* Someone in the cluster has disallowed a wipe of |
1045 | * this inode, or it was never completely | |
1046 | * orphaned. Write out the pages and exit now. */ | |
ccd979bd MF |
1047 | ocfs2_cleanup_delete_inode(inode, 1); |
1048 | goto bail_unlock_inode; | |
1049 | } | |
1050 | ||
1051 | ocfs2_cleanup_delete_inode(inode, 0); | |
1052 | ||
1053 | status = ocfs2_wipe_inode(inode, di_bh); | |
1054 | if (status < 0) { | |
b4df6ed8 MF |
1055 | if (status != -EDEADLK) |
1056 | mlog_errno(status); | |
ccd979bd MF |
1057 | goto bail_unlock_inode; |
1058 | } | |
1059 | ||
24c19ef4 MF |
1060 | /* |
1061 | * Mark the inode as successfully deleted. | |
1062 | * | |
1063 | * This is important for ocfs2_clear_inode() as it will check | |
1064 | * this flag and skip any checkpointing work | |
1065 | * | |
1066 | * ocfs2_stuff_meta_lvb() also uses this flag to invalidate | |
1067 | * the LVB for other nodes. | |
1068 | */ | |
ccd979bd MF |
1069 | OCFS2_I(inode)->ip_flags |= OCFS2_INODE_DELETED; |
1070 | ||
1071 | bail_unlock_inode: | |
e63aecb6 | 1072 | ocfs2_inode_unlock(inode, 1); |
ccd979bd | 1073 | brelse(di_bh); |
6ca497a8 | 1074 | |
1075 | bail_unlock_nfs_sync: | |
1076 | ocfs2_nfs_sync_unlock(OCFS2_SB(inode->i_sb), 0); | |
1077 | ||
ccd979bd | 1078 | bail_unblock: |
e4b963f1 | 1079 | ocfs2_unblock_signals(&oldset); |
ccd979bd | 1080 | bail: |
ccd979bd MF |
1081 | mlog_exit_void(); |
1082 | } | |
1083 | ||
066d92dc | 1084 | static void ocfs2_clear_inode(struct inode *inode) |
ccd979bd MF |
1085 | { |
1086 | int status; | |
1087 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
1088 | ||
066d92dc | 1089 | end_writeback(inode); |
b0697053 MF |
1090 | mlog(0, "Clearing inode: %llu, nlink = %u\n", |
1091 | (unsigned long long)OCFS2_I(inode)->ip_blkno, inode->i_nlink); | |
ccd979bd MF |
1092 | |
1093 | mlog_bug_on_msg(OCFS2_SB(inode->i_sb) == NULL, | |
1094 | "Inode=%lu\n", inode->i_ino); | |
1095 | ||
9f754758 | 1096 | dquot_drop(inode); |
257ba15c | 1097 | |
34d024f8 MF |
1098 | /* To preven remote deletes we hold open lock before, now it |
1099 | * is time to unlock PR and EX open locks. */ | |
50008630 TY |
1100 | ocfs2_open_unlock(inode); |
1101 | ||
ccd979bd | 1102 | /* Do these before all the other work so that we don't bounce |
34d024f8 | 1103 | * the downconvert thread while waiting to destroy the locks. */ |
ccd979bd | 1104 | ocfs2_mark_lockres_freeing(&oi->ip_rw_lockres); |
e63aecb6 | 1105 | ocfs2_mark_lockres_freeing(&oi->ip_inode_lockres); |
50008630 | 1106 | ocfs2_mark_lockres_freeing(&oi->ip_open_lockres); |
ccd979bd | 1107 | |
4fe370af MF |
1108 | ocfs2_resv_discard(&OCFS2_SB(inode->i_sb)->osb_la_resmap, |
1109 | &oi->ip_la_data_resv); | |
1110 | ocfs2_resv_init_once(&oi->ip_la_data_resv); | |
1111 | ||
ccd979bd MF |
1112 | /* We very well may get a clear_inode before all an inodes |
1113 | * metadata has hit disk. Of course, we can't drop any cluster | |
1114 | * locks until the journal has finished with it. The only | |
1115 | * exception here are successfully wiped inodes - their | |
1116 | * metadata can now be considered to be part of the system | |
1117 | * inodes from which it came. */ | |
1118 | if (!(OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED)) | |
1119 | ocfs2_checkpoint_inode(inode); | |
1120 | ||
1121 | mlog_bug_on_msg(!list_empty(&oi->ip_io_markers), | |
b0697053 MF |
1122 | "Clear inode of %llu, inode has io markers\n", |
1123 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1124 | |
83418978 MF |
1125 | ocfs2_extent_map_trunc(inode, 0); |
1126 | ||
ccd979bd MF |
1127 | status = ocfs2_drop_inode_locks(inode); |
1128 | if (status < 0) | |
1129 | mlog_errno(status); | |
1130 | ||
1131 | ocfs2_lock_res_free(&oi->ip_rw_lockres); | |
e63aecb6 | 1132 | ocfs2_lock_res_free(&oi->ip_inode_lockres); |
50008630 | 1133 | ocfs2_lock_res_free(&oi->ip_open_lockres); |
ccd979bd | 1134 | |
66fb345d | 1135 | ocfs2_metadata_cache_exit(INODE_CACHE(inode)); |
ccd979bd | 1136 | |
8cb471e8 | 1137 | mlog_bug_on_msg(INODE_CACHE(inode)->ci_num_cached, |
b0697053 | 1138 | "Clear inode of %llu, inode has %u cache items\n", |
8cb471e8 JB |
1139 | (unsigned long long)oi->ip_blkno, |
1140 | INODE_CACHE(inode)->ci_num_cached); | |
ccd979bd | 1141 | |
8cb471e8 | 1142 | mlog_bug_on_msg(!(INODE_CACHE(inode)->ci_flags & OCFS2_CACHE_FL_INLINE), |
b0697053 MF |
1143 | "Clear inode of %llu, inode has a bad flag\n", |
1144 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1145 | |
1146 | mlog_bug_on_msg(spin_is_locked(&oi->ip_lock), | |
b0697053 MF |
1147 | "Clear inode of %llu, inode is locked\n", |
1148 | (unsigned long long)oi->ip_blkno); | |
ccd979bd | 1149 | |
251b6ecc | 1150 | mlog_bug_on_msg(!mutex_trylock(&oi->ip_io_mutex), |
b0697053 MF |
1151 | "Clear inode of %llu, io_mutex is locked\n", |
1152 | (unsigned long long)oi->ip_blkno); | |
251b6ecc | 1153 | mutex_unlock(&oi->ip_io_mutex); |
ccd979bd MF |
1154 | |
1155 | /* | |
1156 | * down_trylock() returns 0, down_write_trylock() returns 1 | |
1157 | * kernel 1, world 0 | |
1158 | */ | |
1159 | mlog_bug_on_msg(!down_write_trylock(&oi->ip_alloc_sem), | |
b0697053 MF |
1160 | "Clear inode of %llu, alloc_sem is locked\n", |
1161 | (unsigned long long)oi->ip_blkno); | |
ccd979bd MF |
1162 | up_write(&oi->ip_alloc_sem); |
1163 | ||
1164 | mlog_bug_on_msg(oi->ip_open_count, | |
b0697053 MF |
1165 | "Clear inode of %llu has open count %d\n", |
1166 | (unsigned long long)oi->ip_blkno, oi->ip_open_count); | |
ccd979bd MF |
1167 | |
1168 | /* Clear all other flags. */ | |
47460d65 | 1169 | oi->ip_flags = 0; |
ccd979bd MF |
1170 | oi->ip_dir_start_lookup = 0; |
1171 | oi->ip_blkno = 0ULL; | |
ae0dff68 SM |
1172 | |
1173 | /* | |
1174 | * ip_jinode is used to track txns against this inode. We ensure that | |
1175 | * the journal is flushed before journal shutdown. Thus it is safe to | |
1176 | * have inodes get cleaned up after journal shutdown. | |
1177 | */ | |
2b4e30fb JB |
1178 | jbd2_journal_release_jbd_inode(OCFS2_SB(inode->i_sb)->journal->j_journal, |
1179 | &oi->ip_jinode); | |
ccd979bd | 1180 | |
ccd979bd MF |
1181 | mlog_exit_void(); |
1182 | } | |
1183 | ||
066d92dc AV |
1184 | void ocfs2_evict_inode(struct inode *inode) |
1185 | { | |
1186 | if (!inode->i_nlink || | |
1187 | (OCFS2_I(inode)->ip_flags & OCFS2_INODE_MAYBE_ORPHANED)) { | |
1188 | ocfs2_delete_inode(inode); | |
1189 | } else { | |
1190 | truncate_inode_pages(&inode->i_data, 0); | |
1191 | } | |
1192 | ocfs2_clear_inode(inode); | |
1193 | } | |
1194 | ||
ccd979bd MF |
1195 | /* Called under inode_lock, with no more references on the |
1196 | * struct inode, so it's safe here to check the flags field | |
1197 | * and to manipulate i_nlink without any other locks. */ | |
45321ac5 | 1198 | int ocfs2_drop_inode(struct inode *inode) |
ccd979bd MF |
1199 | { |
1200 | struct ocfs2_inode_info *oi = OCFS2_I(inode); | |
45321ac5 | 1201 | int res; |
ccd979bd | 1202 | |
b0697053 MF |
1203 | mlog(0, "Drop inode %llu, nlink = %u, ip_flags = 0x%x\n", |
1204 | (unsigned long long)oi->ip_blkno, inode->i_nlink, oi->ip_flags); | |
ccd979bd | 1205 | |
379dfe9d | 1206 | if (oi->ip_flags & OCFS2_INODE_MAYBE_ORPHANED) |
45321ac5 | 1207 | res = 1; |
379dfe9d | 1208 | else |
45321ac5 | 1209 | res = generic_drop_inode(inode); |
ccd979bd MF |
1210 | |
1211 | mlog_exit_void(); | |
45321ac5 | 1212 | return res; |
ccd979bd MF |
1213 | } |
1214 | ||
ccd979bd MF |
1215 | /* |
1216 | * This is called from our getattr. | |
1217 | */ | |
1218 | int ocfs2_inode_revalidate(struct dentry *dentry) | |
1219 | { | |
1220 | struct inode *inode = dentry->d_inode; | |
1221 | int status = 0; | |
1222 | ||
ef6b689b TM |
1223 | mlog(0, "(inode = 0x%p, ino = %llu)\n", inode, |
1224 | inode ? (unsigned long long)OCFS2_I(inode)->ip_blkno : 0ULL); | |
ccd979bd MF |
1225 | |
1226 | if (!inode) { | |
1227 | mlog(0, "eep, no inode!\n"); | |
1228 | status = -ENOENT; | |
1229 | goto bail; | |
1230 | } | |
1231 | ||
1232 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1233 | if (OCFS2_I(inode)->ip_flags & OCFS2_INODE_DELETED) { | |
1234 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1235 | mlog(0, "inode deleted!\n"); | |
1236 | status = -ENOENT; | |
1237 | goto bail; | |
1238 | } | |
1239 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1240 | ||
e63aecb6 | 1241 | /* Let ocfs2_inode_lock do the work of updating our struct |
ccd979bd | 1242 | * inode for us. */ |
e63aecb6 | 1243 | status = ocfs2_inode_lock(inode, NULL, 0); |
ccd979bd MF |
1244 | if (status < 0) { |
1245 | if (status != -ENOENT) | |
1246 | mlog_errno(status); | |
1247 | goto bail; | |
1248 | } | |
e63aecb6 | 1249 | ocfs2_inode_unlock(inode, 0); |
ccd979bd MF |
1250 | bail: |
1251 | mlog_exit(status); | |
1252 | ||
1253 | return status; | |
1254 | } | |
1255 | ||
1256 | /* | |
1257 | * Updates a disk inode from a | |
1258 | * struct inode. | |
1259 | * Only takes ip_lock. | |
1260 | */ | |
1fabe148 | 1261 | int ocfs2_mark_inode_dirty(handle_t *handle, |
ccd979bd MF |
1262 | struct inode *inode, |
1263 | struct buffer_head *bh) | |
1264 | { | |
1265 | int status; | |
1266 | struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bh->b_data; | |
1267 | ||
ef6b689b TM |
1268 | mlog(0, "(inode %llu)\n", |
1269 | (unsigned long long)OCFS2_I(inode)->ip_blkno); | |
ccd979bd | 1270 | |
0cf2f763 | 1271 | status = ocfs2_journal_access_di(handle, INODE_CACHE(inode), bh, |
13723d00 | 1272 | OCFS2_JOURNAL_ACCESS_WRITE); |
ccd979bd MF |
1273 | if (status < 0) { |
1274 | mlog_errno(status); | |
1275 | goto leave; | |
1276 | } | |
1277 | ||
1278 | spin_lock(&OCFS2_I(inode)->ip_lock); | |
1279 | fe->i_clusters = cpu_to_le32(OCFS2_I(inode)->ip_clusters); | |
6e4b0d56 | 1280 | ocfs2_get_inode_flags(OCFS2_I(inode)); |
ca4d147e | 1281 | fe->i_attr = cpu_to_le32(OCFS2_I(inode)->ip_attr); |
15b1e36b | 1282 | fe->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features); |
ccd979bd MF |
1283 | spin_unlock(&OCFS2_I(inode)->ip_lock); |
1284 | ||
1285 | fe->i_size = cpu_to_le64(i_size_read(inode)); | |
198a1ca3 | 1286 | ocfs2_set_links_count(fe, inode->i_nlink); |
ccd979bd MF |
1287 | fe->i_uid = cpu_to_le32(inode->i_uid); |
1288 | fe->i_gid = cpu_to_le32(inode->i_gid); | |
1289 | fe->i_mode = cpu_to_le16(inode->i_mode); | |
1290 | fe->i_atime = cpu_to_le64(inode->i_atime.tv_sec); | |
1291 | fe->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); | |
1292 | fe->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); | |
1293 | fe->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); | |
1294 | fe->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); | |
1295 | fe->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); | |
1296 | ||
ec20cec7 | 1297 | ocfs2_journal_dirty(handle, bh); |
ccd979bd | 1298 | leave: |
ccd979bd MF |
1299 | mlog_exit(status); |
1300 | return status; | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * | |
1305 | * Updates a struct inode from a disk inode. | |
1306 | * does no i/o, only takes ip_lock. | |
1307 | */ | |
1308 | void ocfs2_refresh_inode(struct inode *inode, | |
1309 | struct ocfs2_dinode *fe) | |
1310 | { | |
ccd979bd MF |
1311 | spin_lock(&OCFS2_I(inode)->ip_lock); |
1312 | ||
1313 | OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters); | |
ca4d147e | 1314 | OCFS2_I(inode)->ip_attr = le32_to_cpu(fe->i_attr); |
15b1e36b | 1315 | OCFS2_I(inode)->ip_dyn_features = le16_to_cpu(fe->i_dyn_features); |
ca4d147e | 1316 | ocfs2_set_inode_flags(inode); |
ccd979bd | 1317 | i_size_write(inode, le64_to_cpu(fe->i_size)); |
198a1ca3 | 1318 | inode->i_nlink = ocfs2_read_links_count(fe); |
ccd979bd MF |
1319 | inode->i_uid = le32_to_cpu(fe->i_uid); |
1320 | inode->i_gid = le32_to_cpu(fe->i_gid); | |
1321 | inode->i_mode = le16_to_cpu(fe->i_mode); | |
ccd979bd MF |
1322 | if (S_ISLNK(inode->i_mode) && le32_to_cpu(fe->i_clusters) == 0) |
1323 | inode->i_blocks = 0; | |
1324 | else | |
8110b073 | 1325 | inode->i_blocks = ocfs2_inode_sector_count(inode); |
ccd979bd MF |
1326 | inode->i_atime.tv_sec = le64_to_cpu(fe->i_atime); |
1327 | inode->i_atime.tv_nsec = le32_to_cpu(fe->i_atime_nsec); | |
1328 | inode->i_mtime.tv_sec = le64_to_cpu(fe->i_mtime); | |
1329 | inode->i_mtime.tv_nsec = le32_to_cpu(fe->i_mtime_nsec); | |
1330 | inode->i_ctime.tv_sec = le64_to_cpu(fe->i_ctime); | |
1331 | inode->i_ctime.tv_nsec = le32_to_cpu(fe->i_ctime_nsec); | |
1332 | ||
1333 | spin_unlock(&OCFS2_I(inode)->ip_lock); | |
1334 | } | |
b657c95c JB |
1335 | |
1336 | int ocfs2_validate_inode_block(struct super_block *sb, | |
1337 | struct buffer_head *bh) | |
1338 | { | |
d6b32bbb | 1339 | int rc; |
b657c95c JB |
1340 | struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data; |
1341 | ||
970e4936 JB |
1342 | mlog(0, "Validating dinode %llu\n", |
1343 | (unsigned long long)bh->b_blocknr); | |
1344 | ||
b657c95c JB |
1345 | BUG_ON(!buffer_uptodate(bh)); |
1346 | ||
d6b32bbb JB |
1347 | /* |
1348 | * If the ecc fails, we return the error but otherwise | |
1349 | * leave the filesystem running. We know any error is | |
1350 | * local to this block. | |
1351 | */ | |
1352 | rc = ocfs2_validate_meta_ecc(sb, bh->b_data, &di->i_check); | |
13723d00 JB |
1353 | if (rc) { |
1354 | mlog(ML_ERROR, "Checksum failed for dinode %llu\n", | |
1355 | (unsigned long long)bh->b_blocknr); | |
d6b32bbb | 1356 | goto bail; |
13723d00 | 1357 | } |
d6b32bbb JB |
1358 | |
1359 | /* | |
1360 | * Errors after here are fatal. | |
1361 | */ | |
1362 | ||
1363 | rc = -EINVAL; | |
1364 | ||
b657c95c JB |
1365 | if (!OCFS2_IS_VALID_DINODE(di)) { |
1366 | ocfs2_error(sb, "Invalid dinode #%llu: signature = %.*s\n", | |
1367 | (unsigned long long)bh->b_blocknr, 7, | |
1368 | di->i_signature); | |
1369 | goto bail; | |
1370 | } | |
1371 | ||
1372 | if (le64_to_cpu(di->i_blkno) != bh->b_blocknr) { | |
1373 | ocfs2_error(sb, "Invalid dinode #%llu: i_blkno is %llu\n", | |
1374 | (unsigned long long)bh->b_blocknr, | |
1375 | (unsigned long long)le64_to_cpu(di->i_blkno)); | |
1376 | goto bail; | |
1377 | } | |
1378 | ||
1379 | if (!(di->i_flags & cpu_to_le32(OCFS2_VALID_FL))) { | |
1380 | ocfs2_error(sb, | |
1381 | "Invalid dinode #%llu: OCFS2_VALID_FL not set\n", | |
1382 | (unsigned long long)bh->b_blocknr); | |
1383 | goto bail; | |
1384 | } | |
1385 | ||
1386 | if (le32_to_cpu(di->i_fs_generation) != | |
1387 | OCFS2_SB(sb)->fs_generation) { | |
1388 | ocfs2_error(sb, | |
1389 | "Invalid dinode #%llu: fs_generation is %u\n", | |
1390 | (unsigned long long)bh->b_blocknr, | |
1391 | le32_to_cpu(di->i_fs_generation)); | |
1392 | goto bail; | |
1393 | } | |
1394 | ||
1395 | rc = 0; | |
1396 | ||
1397 | bail: | |
1398 | return rc; | |
1399 | } | |
1400 | ||
1401 | int ocfs2_read_inode_block_full(struct inode *inode, struct buffer_head **bh, | |
1402 | int flags) | |
1403 | { | |
1404 | int rc; | |
1405 | struct buffer_head *tmp = *bh; | |
1406 | ||
8cb471e8 JB |
1407 | rc = ocfs2_read_blocks(INODE_CACHE(inode), OCFS2_I(inode)->ip_blkno, |
1408 | 1, &tmp, flags, ocfs2_validate_inode_block); | |
b657c95c JB |
1409 | |
1410 | /* If ocfs2_read_blocks() got us a new bh, pass it up. */ | |
970e4936 | 1411 | if (!rc && !*bh) |
b657c95c JB |
1412 | *bh = tmp; |
1413 | ||
b657c95c JB |
1414 | return rc; |
1415 | } | |
1416 | ||
1417 | int ocfs2_read_inode_block(struct inode *inode, struct buffer_head **bh) | |
1418 | { | |
1419 | return ocfs2_read_inode_block_full(inode, bh, 0); | |
1420 | } | |
6e5a3d75 | 1421 | |
6e5a3d75 JB |
1422 | |
1423 | static u64 ocfs2_inode_cache_owner(struct ocfs2_caching_info *ci) | |
1424 | { | |
1425 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1426 | ||
1427 | return oi->ip_blkno; | |
1428 | } | |
1429 | ||
8cb471e8 JB |
1430 | static struct super_block *ocfs2_inode_cache_get_super(struct ocfs2_caching_info *ci) |
1431 | { | |
1432 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1433 | ||
1434 | return oi->vfs_inode.i_sb; | |
1435 | } | |
1436 | ||
6e5a3d75 JB |
1437 | static void ocfs2_inode_cache_lock(struct ocfs2_caching_info *ci) |
1438 | { | |
1439 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1440 | ||
1441 | spin_lock(&oi->ip_lock); | |
1442 | } | |
1443 | ||
1444 | static void ocfs2_inode_cache_unlock(struct ocfs2_caching_info *ci) | |
1445 | { | |
1446 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1447 | ||
1448 | spin_unlock(&oi->ip_lock); | |
1449 | } | |
1450 | ||
1451 | static void ocfs2_inode_cache_io_lock(struct ocfs2_caching_info *ci) | |
1452 | { | |
1453 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1454 | ||
1455 | mutex_lock(&oi->ip_io_mutex); | |
1456 | } | |
1457 | ||
1458 | static void ocfs2_inode_cache_io_unlock(struct ocfs2_caching_info *ci) | |
1459 | { | |
1460 | struct ocfs2_inode_info *oi = cache_info_to_inode(ci); | |
1461 | ||
1462 | mutex_unlock(&oi->ip_io_mutex); | |
1463 | } | |
1464 | ||
1465 | const struct ocfs2_caching_operations ocfs2_inode_caching_ops = { | |
1466 | .co_owner = ocfs2_inode_cache_owner, | |
8cb471e8 | 1467 | .co_get_super = ocfs2_inode_cache_get_super, |
6e5a3d75 JB |
1468 | .co_cache_lock = ocfs2_inode_cache_lock, |
1469 | .co_cache_unlock = ocfs2_inode_cache_unlock, | |
1470 | .co_io_lock = ocfs2_inode_cache_io_lock, | |
1471 | .co_io_unlock = ocfs2_inode_cache_io_unlock, | |
1472 | }; | |
1473 |